2720409789 has 8 divisors (see below), whose sum is σ = 3629545920. Its totient is φ = 1812440096.

The previous prime is 2720409787. The next prime is 2720409803. The reversal of 2720409789 is 9879040272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2720409789 - 2¹ = 2720409787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720409787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286152 + ... + 295505.

It is an arithmetic number, because the mean of its divisors is an integer number (453693240).

Almost surely, 2^2720409789 is an apocalyptic number.

It is an amenable number.

2720409789 is a deficient number, since it is larger than the sum of its proper divisors (909136131).

2720409789 is a wasteful number, since it uses less digits than its factorization.

2720409789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583219.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 2720409789 is about 52157.5477663588. The cubic root of 2720409789 is about 1395.9765072209.

The spelling of 2720409789 in words is "two billion, seven hundred twenty million, four hundred nine thousand, seven hundred eighty-nine".